Yea, good point. I can imagine ways where it works out well (e.g. the insurer that found the cheap cure patents it and charges some expensive price that's still significantly cheaper than a lifetime of non-curing treatments. Everybody wins, but the insurance company that owns the cure wins the most.)
If they did that, they would no longer be an insurance provider, but a pharmaceutical company, and at that point there’s no reason to develop cures when short term mitigations are even more profitable.
